Time light-extinguisher.



Patented Aug 22, I899.

J. GUNNING.

TIME LIGHT EXTINGUISHER.

, (Application filed Apr. 4, 1898.)

(No Model.)

Inventor QWW witnesses HOTD-LITNO-VWASHWGTON n c UNITED STATES PATENTOFFICE.

JOHN GUNNING, OF BOURNEMOUTH, ENGLAND.

TIME LIGHT-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 631,522, dated August22, 1899.

Application filed April 4, 1898. Serial No. 676,285. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN GUNNING, a citizen of England, residing at No.100 Holdenhurst road, Bournemouth, in the county of Hants, England, haveinvented a certain new and useful Improvement in Apparatus forExtinguishing Lights after a Predetermined Time,of which the followingis a specification.

In my Patent No. 615,164., dated November 29, 1898, I have describedmeans of extinguishin g gas or electric lights after a predeterminedtime, a gas-valve being closed or an electric circuit being opened by anadj ustable'arm set for the required number of hours on a disk moved byclockwork. It sometimes happens that of a number of lights some may haveto be extinguished before others, or some or all of a number ofgas-lights may have to be lowered some time before their completeextinction.

My present invention relates to the modification of the apparatusdescribed in my patent in such a manner as to provide for the extinctionor lowering of lights under the circumstances mentioned. By wayofexample I shall suppose that there are a number of gas-lights one ormore of which have to be extinguished or lowered some time before theothers. I provide a stop-cock which governs two passages from theservice-pipe, the one passage being so arranged as to be closed orpartly closed when the plug of'the stop-cock is in one position, theother passage being then open or partly closed, and both passages beingclosed when the plug is turned toanother position.

The accompanying drawings show apparatus modified according to mypresent invention.

Figures 1 and 2 are front and back views. Fig. 3 is a section throughthe stop-cock, of which Fig. 4 is a sectional plan to an enlarged scale.1

As in my patent, K is the chain-wheel, fixed on the axis of theclockwork-spring, which is wound up by pulling the chain. G is the disk,which'is also fixed on the axis of the spring.

A is the gas-supply pipe, in which is fitted a two-way cock L. On theplug of this cock is fixed a lever having two arms M and N, and free toturn on the axis of the disk Gare two arms I and .I, of which I is thelonger.

These arms can be set on the disk Gin positions corresponding to any ofthe hours marked thereon and held by setting-screws. In the plug of thecock L there is a longitu dinal passage Z,communicating with twotransverse passages l 1 of which Z is the wider. These passagescorrespond to ports leading to two gas-pipes P Q, each supplying aburner or set of burners.

The apparatus operates as follows: The arms I and J being fixed in thedesired positions on the disk Gsay I at seven and J at three oclock-whenit is desired to light the gas the chain'is pulled, turning the disk Gin the direction of the arrow, so that its shoulder H, acting on the armM, turns the plug of the cock so as to put both pipes P and Q incommunication with the service A, both sets of burners being thussupplied. The spring having been wound up by the pull of the chain, theclockwork goes on moving the disk G back until the shorter arm J,meeting the arm M at three oclock, turns the cock partly around, closingthe passage Z to P and so extinguishing the one set of lights, but stillleaving the passage 1 to Q for the other set of lights sufficiently opento keep them full on, or, if desired, less open, so as to lower themaccording as the passage Z is made more or less wide. As the clockcontinues to go the arm I at seven oclock comes to act on the arm N andturns the plug so far as to extinguish the set of lights supplied by Q.When it is desired to lower at the earlier hour and extinguish at thelater hour either one single light ora single set of lights, a plug isinserted at Q, so that when the arm J shuts off the supply Z to pipe P asupply passes to pipe P through the passage from Z to Z, which can beregulated by the screw S. Then at the later hour the arm I extinguishesthis by closing the supply at Z To either or both the pipes P and Qthere may be a small passage when the plug is in the closed position,so'as to maintain a small light ready to kindle the main light when thechain is pulled.

Although I have described the apparatus as arranged to operate agas-valve, it may obviously be applied to the working of an electricswitch, where electric lights are employed instead of gas-lights.

Having thus described the nature of this invention and the best means Iknow of carout off the gas first from one set of lights and rying thesame into practical effect, I claimthen from the other; substantially asdo- In apparatus for extinguishing lights at a scribed. predeterminedtime, the combination with a In testimony whereof I have hereunto set 155 disk having a shoulder and provided with my hand in presence of twosubscribing wittwo arms adj ustably mounted thereon, of a nesses.stop-cock controlling gas-passages to two sets 7 of lights, saidstop-cock having a plug pro- JOHN GUNNING' vided with arms arranged tobe acted upon \Vitnesses: I0 by the disk-shoulder to turn on the gas,and OLIVER IMRAY,

by the two arms of the disk successively to J NO. I. M. MILLARD.

